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...ginate outside the [[Earth's atmosphere]] (such as the [[cosmic background radiation]]). It is concerned with the [[evolution]], [[physics]], [[chemistry]], met ...ovided by astronomy and physics, such as the [[cosmic microwave background radiation]], [[Hubble's law]], and cosmological abundances of elements.

...ne layer]] which, together with Earth's [[magnetic field]], blocks harmful radiation, permitting life on land. ...increasingly specialized. Aided by the absorption of harmful [[ultraviolet radiation]] by the [[ozone layer]], life colonized the surface of Earth.[https://www.